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**Ivy Bridge Overclocking Guide** (with LN2 Guide at The End) - Page 21

post #201 of 1205
No, I can set it higher. I just meant set at 1.2 it would not hit that voltage in cpuz. I set my vdroop to the highest setting and still it only hits 1.192 in cpuz and goes down to 1.184 when running prime95. Since it throttles down should I just increase my Vcore a little more? Also by turbo clock do you mean Intel turbo boost? Should I have that enabled because right now its disabled. Thanks for the help.
post #202 of 1205
Quote:
Originally Posted by hoppingpulse View Post

No, I can set it higher. I just meant set at 1.2 it would not hit that voltage in cpuz. I set my vdroop to the highest setting and still it only hits 1.192 in cpuz and goes down to 1.184 when running prime95. Since it throttles down should I just increase my Vcore a little more? Also by turbo clock do you mean Intel turbo boost? Should I have that enabled because right now its disabled. Thanks for the help.

If your load Vcore is not high enough for stability and LLC does not fix it, then just raise Vcore. A lot of people are recommending not using the highest LLC setting, use one of the middle ones and set a slightly higher Vcore.

My BIOS is obviously different than yours, but the multiplier you should be changing is the turbo ratio:
450
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post #203 of 1205
I haven't tested it to rock solid yet, but I seem to have a stable OC on my 3570k of 4.7GHz at 1.2v using a Phanteks PH-TC14PE cooler. Based on some of the other accounts I've read, that seems like it's really on the low end for voltage... do you guys think I'm missing something or does that seem realistic?
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post #204 of 1205
Quote:
Originally Posted by blueyedsoul View Post

I haven't tested it to rock solid yet, but I seem to have a stable OC on my 3570k of 4.7GHz at 1.2v using a Phanteks PH-TC14PE cooler. Based on some of the other accounts I've read, that seems like it's really on the low end for voltage... do you guys think I'm missing something or does that seem realistic?

Highly unlikely but not impossible. If you're stable at that, you got very very lucky.
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post #205 of 1205
Quote:
Originally Posted by bgineng View Post

Highly unlikely but not impossible. If you're stable at that, you got very very lucky.

Well, I did run into quite a few issues at 4.8GHz, even after pushing past 1.25v, so there's definitely a major climb at that speed. I'm not sure if I want to keep pushing it - temps have not been an issue at all so far. With my current settings, I haven't seen it go above 67c.

I'm going to let Prime95 run while I'm at work today to see how it does on an extended test. Do you have any other recommendations I should try to stress it with?
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post #206 of 1205
Quote:
Originally Posted by blueyedsoul View Post

Well, I did run into quite a few issues at 4.8GHz, even after pushing past 1.25v, so there's definitely a major climb at that speed. I'm not sure if I want to keep pushing it - temps have not been an issue at all so far. With my current settings, I haven't seen it go above 67c.
I'm going to let Prime95 run while I'm at work today to see how it does on an extended test. Do you have any other recommendations I should try to stress it with?

Most people need over 1.3v to hit 4.8, so you still have plenty of voltage headroom to try and get stable if you want.

LinX and Intel Burn Test use AVX instructions, and they are the tests that make my cpu hit its highest temps. They work well as stress tests.
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post #207 of 1205
I don't know if I should trust IBT. The latest version of IBT (2.53) was released on December 22, 2011, which is way before Ivy Bridge even releases.
    
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post #208 of 1205
Quote:
Originally Posted by hoppingpulse View Post

No, I can set it higher. I just meant set at 1.2 it would not hit that voltage in cpuz. I set my vdroop to the highest setting and still it only hits 1.192 in cpuz and goes down to 1.184 when running prime95. Since it throttles down should I just increase my Vcore a little more? Also by turbo clock do you mean Intel turbo boost? Should I have that enabled because right now its disabled. Thanks for the help.

Enable Turbo. That's probably the issue. I know with my Asus board, if that's not enabled then it puts a wall up.
post #209 of 1205
Quote:
Originally Posted by Teiji View Post

I don't know if I should trust IBT. The latest version of IBT (2.53) was released on December 22, 2011, which is way before Ivy Bridge even releases.

I'll admit it probably isn't the most reliable of the stress tests for the exact reason you stated. However, it stresses the cpu, so if you're just looking for another test to throw at it, then it will do the job.
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post #210 of 1205
Quote:
Originally Posted by blueyedsoul View Post

Well, I did run into quite a few issues at 4.8GHz, even after pushing past 1.25v, so there's definitely a major climb at that speed. I'm not sure if I want to keep pushing it - temps have not been an issue at all so far. With my current settings, I haven't seen it go above 67c.
I'm going to let Prime95 run while I'm at work today to see how it does on an extended test. Do you have any other recommendations I should try to stress it with?

With Prime95, make sure you have version 27.7 with AVX instructions, it stresses the CPU a lot more than previous versions. Set it to custom, change the memory to 90% of your total, so if you have 8GB (8000mb), set that number to 7200. You can change the time per FFT if you don't want to wait close to 24hrs for it to finish an entire loop. There are 82 FFT lengths, so you can figure the time required to finish that. Let it run through the entire loop.

Afterwards you can do a quick 1 thread test to make sure your stable on that. If you crash it's probably cause the voltage is dropping too much during a single core load.

IBT is a good quick test and heat generator, to see what your temps are like at MAX.
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